This Blazer has auto hvac. Sets code B0408, B0415, B0416. With temp knob in any position and blend knob in any position, the blower motor (in any speed position) will move from high to low. If blower is high heat will come out, when it automattically switches ...

FIX posted 3/5/2009

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle